Portable speaker



FIG. 1 is a front view of a portable speaker, showing our new design;

FIG. 2 is a rear view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a front view of embodiment two, of a portable speaker, showing our new design;

FIG. 8 is a rear view thereof;

FIG. 9 is a left side view thereof;

FIG. 10 is a right side view thereof;

FIG. 11 is a top plan view thereof; and,

FIG. 12 is a bottom plan view thereof.

The broken lines wiring and control knobs portions in FIGS. 1-12 are included to show unclaimed subject matter only and form no part of the claimed design. 

CLAIM The ornamental design for a portable speaker, as shown and described. 